JP3837450B2 - Beam reinforcing bracket and beam through-hole reinforcement structure using the same - Google Patents

Beam reinforcing bracket and beam through-hole reinforcement structure using the same Download PDF

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JP3837450B2
JP3837450B2 JP2002351707A JP2002351707A JP3837450B2 JP 3837450 B2 JP3837450 B2 JP 3837450B2 JP 2002351707 A JP2002351707 A JP 2002351707A JP 2002351707 A JP2002351707 A JP 2002351707A JP 3837450 B2 JP3837450 B2 JP 3837450B2
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hole
reinforcing bracket
beam reinforcing
fastening means
main body
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JP2003232077A (en
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隆司 北野
建蔵 中野
秀治 大庭
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Senqcia Corp
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Hitachi Metals Techno Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、各種建築構造物を構成する梁に形成された貫通孔に固定され当該梁を補強する梁補強金具およびこれを用いた梁貫通孔補強構造に関する。
【0002】
【従来の技術】
H形鋼やI形鋼などは建築構造物を構成する梁の材料として広く使用されている。このような建築構造物においては、その内部に設けられる配管や配線を通過させるため、梁のウェブ部に1または2以上の貫通孔を形成することがある。この場合、梁の強度低下を防止する手段として、貫通孔に取り付ける補強用のスリーブ部材(例えば、特許文献1参照。)や補強プレート(例えば、特許文献2参照。)などがある。
【0003】
特許文献1には、図11に示すような梁貫通スリーブ83が記載されている。この梁貫通スリーブ83は、スリーブ本体80と、このスリーブ本体80の外周部に位置するフランジ81とを、梁82に溶接可能な材料で一体成形されたものであり、スリーブ本体80の肉厚は、少なくともその内周面側が、スリーブ本体80の両端からスリーブ本体80とフランジ81との交接部に向かって徐々に厚くなるように形成されている。このような構成とすることにより、配管84を斜め方向から挿通しても梁貫通スリーブ83の端部に接触して配管84が損傷することがなくなるという効果がある。
【0004】
特許文献2には、貫通孔が形成された梁ウェブ部の両面に、平板状の開口プレートを高力ボルト止めによって接合することを特徴とする貫通孔補強構造が記載されている。これによって、鉄骨加工工数の少ない合理的経済的な梁貫通孔の補強が可能となる。
【0005】
【特許文献1】
特公平4−63942号公報(第1−2頁、第1図)
【特許文献2】
実開平5−57149号公報(第3−4頁、第1図)
【0006】
【発明が解決しようとする課題】
しかしながら、特許文献1に記載されている梁貫通スリーブ83は、梁82のフランジ部85の幅より少し短い筒状の部材であるため、肉厚の調整によって形成できる内径の変化量にも限界があり、梁貫通スリーブ83の挿通角度にも限界がある。このため、さらに配管84の取り付けの自由度が高い補強部材が求められている。
【0007】
また、特許文献2に記載されている貫通孔補強構造は、2枚の開口プレートを必要とするため部品点数が多くなり、梁のウェブ部の両面に配置される2枚の開口プレートをボルトで締結する際の位置決めが困難であるなどの問題がある。
【0008】
一方、近年のインテリジェントビルに代表されるように、建築構造物の設備機能の複雑化が進み、さらに設計対象である建築物が将来的にも建築計画上および建築設備上、十分に機能するように配慮する必要がある。このため、建築構造物内部の各種配管、配線類は柱梁接合構造において柱に接近した領域、言い換えれば、梁の接合端部に接近した領域に集約することが望ましいため、前記貫通孔も柱梁接合構造の柱に接近した位置に形成したいという要請がある。
【0009】
しかしながら、柱に接近した梁の端部は塑性化領域と呼ばれ、大地震時において地震エネルギを吸収して大変形する部位であり、このような領域に貫通孔を設置すると柱梁接合構造の著しい強度低下を招き、それを補うことのできる補強手段もないので、一般に、塑性化領域における貫通孔の設置は避けられている。したがって、配管や配線の面からは不都合な場所である、柱から離れた部位、即ち梁の塑性化領域から離れた部位に貫通孔を形成せざるを得ないのが実状である。
【0010】
そこで、本発明が解決しようとする課題は、梁に開設された貫通孔に対する配管の取り付けの自由度を高めるとともに大きさの異なる貫通孔に対しても材料の無駄を省きつつ必要な強度まで補強することができ、柱梁接合部に近い塑性化領域における貫通孔設置を可能とする梁補強金具と、前記梁補強金具を用いた梁貫通孔補強構造を提供することにある。
【0011】
【課題を解決するための手段】
前記課題を解決するため、本発明の梁補強金具は、梁に形成された貫通孔の周縁部に締結手段を用いて固定される略リング状の梁補強金具であって、貫通孔に嵌入可能なリング本体と、リング本体の軸方向の片面側の外周に形成されたフランジ部とを有し、貫通孔の周縁部に設けられた複数の締結手段挿通孔と対応した配置の締結手段取付孔をフランジ部に設け、リング本体の軸方向の長さを半径方向の肉厚の0.5倍〜10.0倍としたことを特徴とする。
【0012】
梁に外力が加わったとき貫通孔の周縁部に生じる応力は、梁のウェブ部から貫通孔の中心軸に沿って離れるに従って徐々に小さくなるため、所定以上の軸方向長さは材料の無駄になる。そこで、梁補強金具の形状を略リング状とし、そのリング本体の軸方向の長さを半径方向の肉厚の0.5倍〜10.0倍(より好ましくは0.5倍〜5.0倍)に規制することによって、大きさの異なる貫通孔に対しても材料の無駄を省きつつ必要な強度まで補強することができ、また、貫通孔に対して配管を斜めから挿通しても梁補強金具に当接することがなくなり、取り付けの自由度が高まる。
【0013】
この場合、リング本体の軸方向の長さを半径方向の肉厚の0.5倍〜10.0倍としたのは、0.5倍より小さくすると強度が不十分となり、また、10.0倍より大きくすると軸方向の長さの増大の割には強度が大きくならず、材料の無駄が大きくなるからである。
【0014】
なお、前記締結手段取付孔は4〜16箇所に設けることが望ましい。締結手段取付孔が4箇所より少ない場合は1箇所の締結手段に加わる負荷が大きくなり過ぎて、梁補強金具よりも締結手段の方が先に破断することがあり、16箇所より多い場合は締結作業の手間が増大して作業が遅延することがあるため、4〜16箇所が好適であり、これによって各締結手段の応力集中を回避するとともに締結作業を迅速に行うことができる。
【0015】
また、前記梁補強金具の体積を、梁に形成された貫通孔の内部に形成された空間部の体積の1.0倍〜3.0倍にすることも可能である。ここで、空間部の体積は、貫通孔の開口面積に梁のウェブ部の厚みを乗じることにより求めることができる。
【0016】
前記梁補強金具の体積を前記空間部の体積の1.0倍〜3.0倍にしたのは、1.0倍より小さいと、貫通孔が形成されていない梁(以下「無孔梁」という。)より強度が小さくなり、また、3.0倍より大きいと梁の無孔部より強度が大きくなるので品質過剰になり、また、重量が大きくなり過ぎるからである。このような構成とすることによって、大きさが異なる貫通孔に対して所定の強度で補強が行われる。
【0017】
前記リング本体の外周部を、フランジ部の無い面側に向かって徐々に縮径させることも可能である。かかる構成により、リング本体を貫通孔に嵌入させる作業を容易化することができ、作業時間も短縮することができる。
【0018】
一方、リング本体の外周部の最小外径部からフランジ部外周までの長さを外周部の最小外径の半分以下とし、フランジ部の軸方向の長さをリング本体の軸方向の長さの半分以下とすることが望ましい。このような構成を有する梁補強金具を、梁の貫通孔に締結手段を用いて固定すると、優れた補強作用を発揮し、貫通孔が形成されていない梁、いわゆる無孔梁と同等の強度が得られるので、柱梁接合部に近い塑性化領域における貫通孔設置が可能となる。
【0019】
また、前記リング本体の内径を梁成の0.8倍以下とすることが望ましい。梁成とは、梁の重力方向の寸法、例えば、H形鋼を素材とする梁であれば片方のフランジ部表面から他方のフランジ部表面までの寸法をいう。
【0020】
従来の梁貫通孔スリーブの場合、梁に形成可能な貫通孔の内径は梁成の0.5倍程度が上限であったので、配管、配線が多いときは複数の貫通孔を設ける必要があったが、リング本体の内径を梁成の0.8倍以下とすることにより、梁の強度低下を招くことなく、配管・配線用の孔のサイズを梁成の0.8倍までサイズアップすることが可能となるため、複数の貫通孔を設ける必要がなくなり、工数低減を図ることができる。なお、リング本体の内径が梁成の0.8倍を超えると、梁補強機能が低下するため、0.8倍以下が好適である。
【0021】
前記貫通孔の内縁部に直接当接する3以上の位置決め突起部を外周部に設けることも可能である。このような構成とすることにより、梁補強金具のリング本体と貫通孔の形状の誤差を吸収することが可能となるため、中心位置合わせ作業を容易化することができる。
【0022】
また、前記フランジ部の梁との対向面に、梁との間にジベルを挟持するためのジベル挟持面を設けることもできる。ジベルとは、複数の突起部を有する部材であって、フランジ部と梁との間に挟持することによって両者間の摩擦力を増大させる作用があるため、締結手段に加わる剪断力に対する抵抗力を高める機能を発揮する。
【0023】
次に、本発明の梁貫通孔補強構造は、柱梁接合構造を構成する梁に形成された貫通孔の周縁部に前述したいずれかの梁補強金具を締結手段を用いて固定して形成したものであって、柱と梁との接合位置から梁補強金具の軸心までの距離を前記梁の梁成の2倍以下としたことを特徴とする。このような構成とすることにより、建築構造物内部の各種配管、配線類を通すために梁に形成される貫通孔を、柱梁接合構造の柱に接近した位置に配置することができるようになるため、配管、配線の集約化を図ることが可能となり建築物の設計上好都合であり、配線・配管の施工性も大幅に向上する。
【0024】
【発明の実施の形態】
以下、本発明の実施の形態について説明する。
(第1実施形態)
図1(a)は本発明の第1実施形態である梁補強金具の使用状態を示す側断面図であり、(b)は前記梁補強金具が取り付けられる梁の貫通孔を示す側断面図であり、図2は前記梁補強金具の使用状態を示す部分正面図であり、図3は前記梁補強金具の使用状態を示す斜視図である。
【0025】
図1,図2に示すように、梁補強金具1は全体形状が略リング状の部材であって、例えばH形鋼からなる梁2に形成された内径Rの大きさの円形の貫通孔3に梁補強金具1のリング本体4が嵌入され、リング本体4の外周の軸方向の片面側に設けられたフランジ部5が貫通孔3の周縁部に締結手段であるボルト9、ワッシャ11およびナット10を用いて固定されている。
【0026】
梁2の貫通孔3の周囲には締結手段挿通孔6が60度間隔で合計6カ所に形成されている。また、梁補強金具1のフランジ部5には、締結手段挿通孔6の配置と対応する配置で、締結手段取付部の一例である締結手段取付孔7がそれぞれ形成されている。締結手段挿通孔6および締結手段取付孔7には、ボルト9が連通状態に挿通され、ワッシャ11およびナット10によって締結固定されている。フランジ部5を設けているため、軸方向の位置決めを設置用工具なしで確実に行うことができる。
【0027】
リング本体4の外周部は、フランジ部5の無い面側に向かって徐々に縮径させたテーパ形状としている。また、リング本体4の外周部4aの120度間隔の3カ所には、梁2の貫通孔3の内縁部3aに直接当接する位置決め突起部8が均等配置されている。このような位置決め突起部8を設けることによって、貫通孔3の内縁部3aと梁補強金具1のリング本体4の外周部との間に形状的な誤差がある場合でも、容易かつ正確に位置合わせをすることができる。これによって、取り付け精度を向上させ、品質向上を図るとともに、作業時間も短縮することができる。
【0028】
梁補強金具1のリング本体4の最大外径d1は、貫通孔3の内部に形成された内径Rの円形の空間部16に嵌入可能な大きさであり、リング本体4の軸方向長さAは、ウェブ部2wの厚みt1より厚く形成されている。また、リング本体4の内径d2は、その内側に配管15を挿通可能な大きさであって、梁2の重力方向の大きさである梁成Hの0.8倍以下に形成されている。
【0029】
梁2のウェブ部2wの欠損部分である空間部16の体積V1は、
V1=R×π×t1×1/4
によって求めることができ、梁補強金具1の概略の体積V2は、
V2=(d1−d2)×π×A×1/4
によって求めることができる。なお、梁補強金具1の体積V2は、厳密には、フランジ部5および位置決め突起部8を含めるべきであるが、これらの部分の体積比率は全体に対して小さいため、本実施形態においては、体積V2として前記の式で算出される概略値を採用している。本実施形態では、梁補強金具1の体積V2を空間部16の体積V1の1.0倍〜3.0倍に設定することによって、貫通孔3が形成された梁2の強度を無孔梁と同等にすることができる。
【0030】
また、従来の梁貫通スリーブのように軸方向の長さを長くしても強度への影響が少ないことを考慮し、軸方向の長さAを、半径方向の肉厚B(但しB=(d1−d2)/2)の0.5倍〜10.0倍に設定している。かかる構成によって、空間部16の体積V1と梁補強金具1の体積V2との体積比率の設定を変えずに必要な強度を確保することができるとともに梁補強金具1の軸方向の長さを短くでき、梁補強金具1の内部を通過する配管15の梁2に対する挿通角度を大きくできるので、配管の取り付けの自由度を上げることができる。
【0031】
図1(a)および図2で示したように、梁補強金具1は、そのフランジ部5を梁2の貫通孔3の周縁部にボルト9、ワッシャ11およびナット10で締結することによって強固に固定されている。したがって、梁補強金具1を固定した後は、図3に示すように、その内部に配管15などを挿通させることができる。
【0032】
(第2実施形態)
図4は本発明の第2実施形態である梁補強金具の使用状態を示す側断面図であり、図5は前記梁補強金具の使用状態を示す部分正面図である。梁補強金具12のリング本体13の外周部13aの外径d1は、梁2に形成された内径Rの貫通孔3に嵌入可能な大きさとなっている。外周部13aにはテーパが形成されておらず、また、位置決め突起部も形成されていない。従って、外周部13aが貫通孔3の内縁部3aに直接当接している。また、締結手段取付孔7は90度間隔で4カ所に配置されている。
【0033】
フランジ部5の梁2のウェブ部2wとの対向面には、ウェブ部2wとの間にジベル14を挟持するためジベル挟持面5aが形成されている。これにより、梁補強金具12のフランジ部5と梁2のウェブ部2wとの間にはジベル14を円状に挟持することができる。ジベル14は、梁補強金具12と梁2との間の摩擦係数を高める作用があり、ボルト9などに加わる剪断力に対する抵抗力を高めることができる。かかる構成により、ボルト9の本数を減らすことができ、取付作業を短時間のうちに終了することができる。
【0034】
以上、本発明の第1,第2実施形態について説明してきたが、本発明はこれらの実施形態に限定されるものではなく、例えば、ボルトの本数は4〜16本の範囲内で増減することができる。また、梁補強金具1のリング本体4の軸方向の長さAを、半径方向の肉厚Bの0.5倍〜10.0倍(より好ましくは0.5倍〜5.0倍)にすることにより、さらに材料の無駄を省いて梁を軽量化するとともに、配管などの設置の自由度を高めることも可能である。
【0035】
(第3実施形態)
図6は本発明の第3実施形態である梁補強金具を示す正面図であり、図7は図6におけるX−X線断面図であり、図8は図6に示す梁補強金具の使用状態を示す正面図であり、図9は図6に示す梁補強金具の使用状態を示す側断面図であって図8におけるY−Y線断面図に相当する図である。
【0036】
なお、図6〜図9に示す梁補強金具20などおいて、第1,第2実施形態の梁補強金具1,12などと同じ機能、効果を発揮する部分には図1〜図5の場合と同じ符号を付して説明を省略する。
【0037】
図6,図7に示すように、梁補強金具20においては、そのリング本体21の外周部21aの片面側にフランジ部23を設けるとともに、外周部21aをフランジ部23の無い面側に向かって徐々に縮径するテーパ形状としている。ここで、梁補強金具20の各部の寸法を図6,図7に示すような符号で表し、締結手段取付孔7の個数をnとすると、梁補強金具20の体積V2は、

Figure 0003837450
によって求めることができる。また、図9に示すように梁2のウェブ部2wに形成された貫通孔3の空間部16(図示せず)の体積V1は、図1(b)に基づいて算出した場合と同様に、
V1=R×π×t1×1/4
によって求めることができる。
【0038】
本実施形態においては、梁2の貫通孔3にボルト9およびナット10を用いて固定された梁補強金具20の体積V2を、空間部16の体積V1の1.0〜3.0倍とし、リング本体21の最小外径部21aからフランジ部23の外周までの長さCをリング本体21の最小外径d3の半分以下(より好ましくは1/4以下)とするとともに、フランジ部23の軸方向の長さFをリング本体21の軸方向の長さAの半分以下としている。また、梁補強金具20の内径d2を、梁2の梁成Hの0.8倍以下としている。このような構成により、貫通孔3が形成された梁2の強度を無孔梁の強度とほぼ同等にすることができる。
【0039】
ここで、図10を参照して、前述した図6〜9で示した梁補強金具20を用いて構築した梁貫通孔補強構造について説明する。図10に示すように、垂直な1本の柱24に対して水平な4本の梁2を4方向から90度間隔で接合することによって形成された柱梁接合構造において、互いに直線をなすように配置された2本の梁2に形成された貫通孔3に梁補強金具20が図8,図9で示した状態で固定されている。
【0040】
図10に示す梁貫通孔補強構造においては、柱24とそれぞれの梁2との接合部25から梁補強金具20の軸心20cまでの距離22を梁2の梁成Hの2倍以下としている。このように、梁補強金具20を用いて貫通孔3を補強することにより、貫通孔3を柱24に接近した位置に配置することができるようになる。このため、配管、配線の集約化を図ることが可能となって建築物の設計上好都合であり、建築構造物を構築する際の各種配管、配線類の施工性が大幅に向上する。
【0041】
一般に、梁3と柱24との接合部25から梁成Hの2倍の距離だけ離れた位置までの領域を塑性化領域26といい、この領域26は、通常、貫通孔3の形成を回避する領域であったが、ボルト9およびナット10を用いて梁補強金具20を貫通孔3に固定することによって梁2の強度低下が抑制され、無孔梁と同等の強度が得られるため、このような塑性化領域26にも貫通孔3を形成することが可能となった。
【0042】
前述のような構成を有する梁補強金具20が優れた梁補強作用を発揮する理由については、一部不明な部分もあるが、梁補強金具20の形状、各部の寸法比、体積比率などを前述したように設定すれば、梁補強金具20を梁2の貫通孔3に固定することによって、梁2のウェブ部2wの面外剛性が高まり、梁2に外力が加わったときのウェブ部2wの面外変形が防止されるためではないかと推測される。
【0043】
なお、図10では梁補強金具20を用いて構築した梁貫通孔補強構造を示しているが、前述したその他の梁補強金具1,12を用いても同様の梁貫通孔補強構造を構築することが可能であり、梁補強金具20を用いた場合と同様の効果を得ることができる。
【0044】
【発明の効果】
本発明により、以下に示す効果を奏する。
【0045】
(1)梁に形成された貫通孔に嵌入可能なリング本体と、リング本体の軸方向の片面側の外周に形成されたフランジ部とを有し、貫通孔の周縁部に設けられた複数の締結手段挿通孔と対応する配置の締結手段取付孔をフランジ部に設け、リング本体の軸方向の長さを半径方向の肉厚の0.5倍〜10.0倍(より好ましくは0.5倍〜5.0倍)とすることにより、大きさの異なる貫通孔に対しても材料の無駄を省きつつ必要な強度まで補強することができ、また、貫通孔に対して配管を斜めから挿通しても梁補強金具に当接することがなくなり、配管などの取り付けの自由度を高めることができる。
【0046】
(2)前記梁補強金具の体積を、梁に形成された貫通孔の内部に形成された空間部の体積の1.0倍〜3.0倍とすることにより、大きさが異なる貫通孔に対して所定の強度で補強が行なわれ、また、重量が大きくなり過ぎることを防止することができる。
【0047】
(3)前記リング本体の外周部を、フランジ部の無い面側に向かって徐々に縮径させたことにより、梁の貫通孔への嵌入作業を容易化し、作業時間の短縮を図ることができる。
【0048】
(4)前記外周部の最小外径部からフランジ部外周までの長さを外周部の最小外径の半分以下とし、フランジ部の軸方向の長さをリング本体の軸方向の長さの半分以下とすることにより、梁の貫通孔に固定したとき優れた補強作用を発揮するようになり、無孔梁と同等の強度が得られるので、柱梁接合部に近い塑性化領域における貫通孔設置が可能となる。
【0049】
(5)前記リング本体の内径を梁成の0.8倍以下とすることにより、梁の強度低下を招くことなく、配管・配線用の孔のサイズを梁成の0.8倍までサイズアップすることが可能となるため、複数の貫通孔を設ける必要がなくなり、工数低減を図ることができる。
【0050】
(6)前記貫通孔の内縁部に直接当接する3以上の位置決め突起部を前記外周部に設けることにより、貫通孔と梁補強金具の形状的な誤差を吸収して中心位置を合わせることができるようになるため、取付精度が高まって品質が向上するとともに作業時間を短縮化することができる。
【0051】
(7)前記フランジ部の梁との対向面にジベルを挟持するためのジベル挟持面を設けることにより、両者間にジベルを挟持することが可能となり、これによって剪断力に対する抵抗力が増すので、締結手段の個数を減らして、固定作業を短縮化することができる。
【0052】
(8)柱梁接合構造を構成する梁の貫通孔に前記(1)〜(7)のいずれかに記載の梁補強金具を締結手段で固定して形成した梁貫通孔補強構造において、柱と梁との接合位置から梁補強金具の軸心までの距離を梁成の2倍以下とすることにより、柱に近い位置に梁貫通孔を配置可能となるため、配管および配線の集約化を図ることができ、建築物の設計上好都合であり、配管・配線の施工性が大幅に向上する。
【図面の簡単な説明】
【図1】 (a)は本発明の第1実施形態である梁補強金具の使用状態を示す側断面図であり、(b)は(a)に示す補強金具が取り付けられる梁の貫通孔を示す側断面図である。
【図2】 図1(a)に示す梁補強金具の使用状態を示す正面図である。
【図3】 図1(a)に示す梁補強金具の使用状態を示す斜視図である。
【図4】 本発明の第2実施形態である梁補強金具の使用状態を示す側断面図である。
【図5】 図4に示す梁補強金具の使用状態を示す部分正面図である。
【図6】 本発明の第3実施形態である梁補強金具を示す正面図である。
【図7】 図6におけるX−X線断面図である。
【図8】 図6に示す梁補強金具の使用状態を示す正面図である。
【図9】 図6に示す梁補強金具の使用状態を示す側断面図である。
【図10】 図6に示す梁補強金具を用いて構築した梁貫通孔補強構造を示す斜視図である。
【図11】 従来技術である梁貫通孔スリーブを示す側断面図である。
【符号の説明】
1,12,20 梁補強金具
2 梁
2w ウェブ部
3 貫通孔
3a 内縁部
4,13,21 リング本体
4a,13a,21a 外周部
5,23 フランジ部
5a ジベル挟持面
6 締結手段挿通孔
7 締結手段取付孔
8 位置決め突起部
9 ボルト
10 ナット
11 ワッシャ
13 外周部
14 ジベル
15 配管
16 空間部
20c 軸心
22 距離
24 柱
25 接合部
26 塑性化領域
H 梁成[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a beam reinforcing metal fitting that is fixed to a through hole formed in a beam constituting various building structures and reinforces the beam, and a beam through hole reinforcing structure using the same.
[0002]
[Prior art]
H-shaped steel, I-shaped steel, and the like are widely used as materials for beams constituting building structures. In such a building structure, one or two or more through holes may be formed in the web portion of the beam in order to pass piping and wiring provided therein. In this case, as means for preventing the strength of the beam from being lowered, there are a reinforcing sleeve member (for example, see Patent Document 1) attached to the through hole, a reinforcing plate (for example, see Patent Document 2), and the like.
[0003]
Patent Document 1 describes a beam penetration sleeve 83 as shown in FIG. The beam penetration sleeve 83 is formed by integrally molding a sleeve main body 80 and a flange 81 positioned on the outer periphery of the sleeve main body 80 with a material that can be welded to the beam 82. The thickness of the sleeve main body 80 is as follows. At least the inner peripheral surface side is formed so as to gradually become thicker from both ends of the sleeve body 80 toward the intersection of the sleeve body 80 and the flange 81. With such a configuration, there is an effect that even if the pipe 84 is inserted from an oblique direction, the pipe 84 is not damaged by coming into contact with the end portion of the beam penetration sleeve 83.
[0004]
Patent Document 2 describes a through-hole reinforcing structure characterized in that a flat opening plate is joined to both surfaces of a beam web portion in which a through-hole is formed by high-strength bolting. As a result, it is possible to reinforce the beam through-hole with a reasonable cost and a small number of steel frame processing steps.
[0005]
[Patent Document 1]
Japanese Examined Patent Publication No. 4-63942 (page 1-2, Fig. 1)
[Patent Document 2]
Japanese Utility Model Publication No. 5-57149 (page 3-4, Fig. 1)
[0006]
[Problems to be solved by the invention]
However, since the beam penetration sleeve 83 described in Patent Document 1 is a cylindrical member slightly shorter than the width of the flange portion 85 of the beam 82, there is a limit to the amount of change in the inner diameter that can be formed by adjusting the wall thickness. There is also a limit to the insertion angle of the beam penetration sleeve 83. For this reason, the reinforcement member with a high freedom degree of attachment of the piping 84 is calculated | required.
[0007]
In addition, the through-hole reinforcing structure described in Patent Document 2 requires two opening plates, so the number of parts increases, and the two opening plates arranged on both sides of the web portion of the beam are bolted. There is a problem that positioning at the time of fastening is difficult.
[0008]
On the other hand, as represented by intelligent buildings in recent years, the facility functions of building structures have become more complex, and the building to be designed will function sufficiently in the future in terms of building plans and facilities. It is necessary to consider. For this reason, since it is desirable that various pipes and wirings inside the building structure be gathered in a region close to the column in the column-beam joint structure, in other words, in a region close to the joint end of the beam, the through hole is also a column. There is a demand for forming a beam close to the column of the beam joint structure.
[0009]
However, the end of the beam that is close to the column is called a plasticized region, and is a part that absorbs seismic energy and deforms greatly during a large earthquake. Since there is no reinforcing means that causes a significant decrease in strength and can compensate for this, installation of through holes in the plasticized region is generally avoided. Therefore, the actual situation is that a through hole must be formed in a part that is inconvenient from the surface of the piping and wiring, that is, a part away from the column, that is, a part away from the plasticizing region of the beam.
[0010]
Therefore, the problem to be solved by the present invention is to increase the degree of freedom of mounting the pipes to the through holes established in the beam and to reinforce the through holes of different sizes to the required strength while eliminating waste of materials. Another object of the present invention is to provide a beam reinforcing bracket capable of installing a through hole in a plasticized region close to a column beam joint and a beam through hole reinforcing structure using the beam reinforcing bracket.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the beam reinforcing bracket of the present invention is a substantially ring-shaped beam reinforcing bracket that is fixed to a peripheral portion of a through hole formed in a beam by using a fastening means, and can be fitted into the through hole. And a fastening means mounting hole having an arrangement corresponding to a plurality of fastening means insertion holes provided in a peripheral edge portion of the through hole. Is provided in the flange portion, and the axial length of the ring main body is set to 0.5 to 10.0 times the thickness in the radial direction.
[0012]
When an external force is applied to the beam, the stress generated at the periphery of the through hole gradually decreases as the distance from the web portion of the beam along the central axis of the through hole decreases. Become. Therefore, the shape of the beam reinforcing bracket is substantially ring-shaped, and the axial length of the ring body is 0.5 times to 10.0 times the radial thickness (more preferably 0.5 times to 5.0 times). Can be reinforced to the required strength while eliminating material waste even for through-holes of different sizes, and even if pipes are inserted diagonally through the through-holes, There is no contact with the reinforcing bracket, and the degree of freedom of attachment is increased.
[0013]
In this case, the axial length of the ring body is set to 0.5 to 10.0 times the radial thickness. If the length is less than 0.5 times, the strength becomes insufficient. This is because if it is larger than twice, the strength is not increased for the increase in the axial length, and the waste of the material is increased.
[0014]
The fastening means mounting holes are preferably provided at 4 to 16 locations. If the number of fastening means mounting holes is less than 4, the load applied to one fastening means becomes too large, and the fastening means may break earlier than the beam reinforcing bracket. Since the labor of the work increases and the work may be delayed, 4 to 16 locations are suitable, thereby avoiding stress concentration of each fastening means and performing the fastening work quickly.
[0015]
Moreover, it is also possible to make the volume of the beam reinforcing bracket 1.0 to 3.0 times the volume of the space portion formed inside the through hole formed in the beam. Here, the volume of the space portion can be obtained by multiplying the opening area of the through hole by the thickness of the web portion of the beam.
[0016]
The reason why the volume of the beam reinforcing metal fitting is 1.0 to 3.0 times the volume of the space portion is less than 1.0 times when the through hole is not formed (hereinafter referred to as “non-hole beam”). This is because the strength becomes smaller than that of the non-hole portion of the beam and the quality becomes excessive, and the weight becomes too large. By setting it as such a structure, reinforcement with a predetermined intensity | strength is performed with respect to the through-hole from which a magnitude | size differs.
[0017]
It is also possible to gradually reduce the diameter of the outer peripheral portion of the ring body toward the surface side without the flange portion. With this configuration, it is possible to facilitate the work of fitting the ring main body into the through hole, and it is possible to shorten the work time.
[0018]
On the other hand, the length from the minimum outer diameter of the outer periphery of the ring body to the outer periphery of the flange is less than half the minimum outer diameter of the outer periphery, and the axial length of the flange is less than the axial length of the ring main body. It is desirable to make it less than half. When the beam reinforcing bracket having such a structure is fixed to the through hole of the beam by using a fastening means, it exerts an excellent reinforcing action and has the same strength as a beam without a through hole, that is, a so-called non-hole beam. As a result, it is possible to install a through hole in the plasticized region close to the column beam joint.
[0019]
Further, it is desirable that the inner diameter of the ring main body is 0.8 times or less of the beam formation. The beam forming means a dimension in the gravity direction of the beam, for example, a dimension from one flange part surface to the other flange part surface in the case of a beam made of H-shaped steel.
[0020]
In the case of the conventional beam through-hole sleeve, the maximum inner diameter of the through-hole that can be formed in the beam is about 0.5 times that of the beam, so it is necessary to provide a plurality of through-holes when there are many pipes and wires. However, by reducing the inner diameter of the ring body to less than 0.8 times that of the beam, the size of the hole for piping and wiring can be increased to 0.8 times that of the beam without reducing the strength of the beam. Therefore, it is not necessary to provide a plurality of through holes, and man-hours can be reduced. If the inner diameter of the ring main body exceeds 0.8 times that of the beam, the beam reinforcing function is deteriorated, so 0.8 times or less is preferable.
[0021]
It is also possible to provide three or more positioning projections that are in direct contact with the inner edge portion of the through hole on the outer peripheral portion. By adopting such a configuration, it becomes possible to absorb errors in the shapes of the ring main body and the through hole of the beam reinforcing metal fitting, so that the center alignment operation can be facilitated.
[0022]
In addition, on the surface of the flange portion facing the beam, it is possible to provide a diveling surface for holding the divel between the beam. A gibber is a member having a plurality of protrusions, and has an action of increasing the frictional force between the flange part and the beam by sandwiching it between the flange part and the beam. Demonstrate the function to enhance.
[0023]
Next, the beam through-hole reinforcing structure of the present invention is formed by fixing any of the beam reinforcing metal fittings described above to the peripheral portion of the through-hole formed in the beam constituting the column beam connection structure using a fastening means. The distance from the joint position between the column and the beam to the axis of the beam reinforcing bracket is set to be twice or less the beam formation of the beam. By adopting such a configuration, the through-hole formed in the beam for passing various piping and wiring inside the building structure can be arranged at a position close to the column of the column-beam joint structure. Therefore, it is possible to consolidate piping and wiring, which is convenient for building design, and the workability of wiring and piping is greatly improved.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
(First embodiment)
FIG. 1A is a side sectional view showing a use state of a beam reinforcing bracket according to the first embodiment of the present invention, and FIG. 1B is a side sectional view showing a through hole of a beam to which the beam reinforcing bracket is attached. FIG. 2 is a partial front view showing a usage state of the beam reinforcing bracket, and FIG. 3 is a perspective view showing a usage state of the beam reinforcing bracket.
[0025]
As shown in FIGS. 1 and 2, the beam reinforcing bracket 1 is a member having a substantially ring shape as a whole. For example, a circular through hole 3 having an inner diameter R formed in a beam 2 made of H-shaped steel. A ring main body 4 of the beam reinforcing metal fitting 1 is fitted into the flange body 5 and a flange portion 5 provided on one axial side of the outer periphery of the ring main body 4 is a bolt 9, a washer 11, and a nut as fastening means on the peripheral edge of the through hole 3. 10 is fixed.
[0026]
Around the through hole 3 of the beam 2, fastening means insertion holes 6 are formed at a total of six locations at intervals of 60 degrees. Further, the flange portion 5 of the beam reinforcing bracket 1 is formed with a fastening means mounting hole 7 which is an example of a fastening means mounting portion in an arrangement corresponding to the arrangement of the fastening means insertion hole 6. A bolt 9 is inserted into the fastening means insertion hole 6 and the fastening means mounting hole 7 in a communicating state, and is fastened and fixed by a washer 11 and a nut 10. Since the flange portion 5 is provided, the axial positioning can be reliably performed without an installation tool.
[0027]
The outer peripheral portion of the ring body 4 has a tapered shape that is gradually reduced in diameter toward the surface without the flange portion 5. In addition, positioning projections 8 that are in direct contact with the inner edge portion 3a of the through hole 3 of the beam 2 are equally disposed at three positions of the outer peripheral portion 4a of the ring body 4 at intervals of 120 degrees. By providing such a positioning protrusion 8, even if there is a shape error between the inner edge 3a of the through-hole 3 and the outer periphery of the ring body 4 of the beam reinforcing bracket 1, the alignment can be performed easily and accurately. Can do. As a result, the mounting accuracy can be improved, the quality can be improved, and the working time can be shortened.
[0028]
The maximum outer diameter d1 of the ring main body 4 of the beam reinforcing metal fitting 1 is a size that can be fitted into a circular space portion 16 having an inner diameter R formed inside the through hole 3, and the axial length A of the ring main body 4. Is formed thicker than the thickness t1 of the web portion 2w. Further, the inner diameter d2 of the ring body 4 is large enough to allow the pipe 15 to be inserted therein, and is formed to be 0.8 times or less of the beam H that is the size of the beam 2 in the gravity direction.
[0029]
The volume V1 of the space portion 16 that is a missing portion of the web portion 2w of the beam 2 is:
V1 = R 2 × π × t1 × 1/4
The approximate volume V2 of the beam reinforcing bracket 1 is
V2 = (d1 2 −d2 2 ) × π × A × 1/4
Can be obtained. Strictly speaking, the volume V2 of the beam reinforcing bracket 1 should include the flange portion 5 and the positioning projection portion 8. However, since the volume ratio of these portions is small with respect to the whole, in this embodiment, The approximate value calculated by the above formula is adopted as the volume V2. In the present embodiment, by setting the volume V2 of the beam reinforcing bracket 1 to be 1.0 to 3.0 times the volume V1 of the space portion 16, the strength of the beam 2 in which the through hole 3 is formed is made as a non-hole beam. Can be equivalent.
[0030]
Considering that the influence on the strength is small even if the axial length is increased as in the conventional beam penetration sleeve, the axial length A is set to the radial thickness B (B = ( d1-d2) / 2) is set to 0.5 times to 10.0 times. With such a configuration, the required strength can be ensured without changing the setting of the volume ratio between the volume V1 of the space portion 16 and the volume V2 of the beam reinforcing bracket 1, and the axial length of the beam reinforcing bracket 1 can be shortened. In addition, since the insertion angle of the pipe 15 passing through the inside of the beam reinforcing bracket 1 with respect to the beam 2 can be increased, the degree of freedom of pipe installation can be increased.
[0031]
As shown in FIG. 1A and FIG. 2, the beam reinforcing bracket 1 is firmly fixed by fastening its flange portion 5 to the peripheral portion of the through hole 3 of the beam 2 with bolts 9, washers 11 and nuts 10. It is fixed. Therefore, after fixing the beam reinforcing metal fitting 1, as shown in FIG. 3, a pipe 15 or the like can be inserted into the inside thereof.
[0032]
(Second Embodiment)
FIG. 4 is a side sectional view showing a usage state of the beam reinforcing bracket according to the second embodiment of the present invention, and FIG. 5 is a partial front view showing the usage state of the beam reinforcing bracket. The outer diameter d1 of the outer peripheral portion 13a of the ring main body 13 of the beam reinforcing bracket 12 is a size that can be fitted into the through hole 3 having the inner diameter R formed in the beam 2. No taper is formed on the outer peripheral portion 13a, and no positioning projection is formed. Accordingly, the outer peripheral portion 13 a is in direct contact with the inner edge portion 3 a of the through hole 3. Further, the fastening means mounting holes 7 are arranged at four positions at intervals of 90 degrees.
[0033]
On the surface of the flange portion 5 that faces the web portion 2w of the beam 2, a diveling surface 5a is formed so as to hold the diveling 14 with the web portion 2w. As a result, the dowel 14 can be held in a circular shape between the flange portion 5 of the beam reinforcing bracket 12 and the web portion 2 w of the beam 2. The bevel 14 has an effect of increasing the coefficient of friction between the beam reinforcing bracket 12 and the beam 2, and can increase resistance to a shearing force applied to the bolt 9 and the like. With this configuration, the number of bolts 9 can be reduced, and the mounting operation can be completed in a short time.
[0034]
As mentioned above, although 1st, 2nd embodiment of this invention has been described, this invention is not limited to these embodiment, For example, the number of bolts increases / decreases within the range of 4-16. Can do. Further, the axial length A of the ring main body 4 of the beam reinforcing metal fitting 1 is 0.5 to 10.0 times (more preferably 0.5 to 5.0 times) the radial thickness B. By doing so, it is possible to further reduce the weight of the beam by eliminating the waste of materials, and to increase the degree of freedom of installation of piping and the like.
[0035]
(Third embodiment)
6 is a front view showing a beam reinforcing bracket according to a third embodiment of the present invention, FIG. 7 is a sectional view taken along line XX in FIG. 6, and FIG. 8 is a use state of the beam reinforcing bracket shown in FIG. FIG. 9 is a side sectional view showing a usage state of the beam reinforcing metal fitting shown in FIG. 6, and corresponds to a sectional view taken along line YY in FIG.
[0036]
In addition, in the beam reinforcing bracket 20 shown in FIGS. 6 to 9 and the like, the portions that exhibit the same functions and effects as the beam reinforcing brackets 1 and 12 of the first and second embodiments are shown in FIGS. The same reference numerals are used and the description thereof is omitted.
[0037]
As shown in FIG. 6 and FIG. 7, in the beam reinforcing bracket 20, the flange portion 23 is provided on one side of the outer peripheral portion 21 a of the ring body 21, and the outer peripheral portion 21 a is directed to the surface side without the flange portion 23. The taper shape gradually decreases in diameter. Here, when the dimensions of each part of the beam reinforcing bracket 20 are represented by reference numerals as shown in FIGS. 6 and 7, and the number of fastening means mounting holes 7 is n, the volume V2 of the beam reinforcing bracket 20 is
Figure 0003837450
Can be obtained. Further, as shown in FIG. 9, the volume V1 of the space 16 (not shown) of the through hole 3 formed in the web portion 2w of the beam 2 is the same as that calculated based on FIG.
V1 = R 2 × π × t1 × 1/4
Can be obtained.
[0038]
In the present embodiment, the volume V2 of the beam reinforcing bracket 20 fixed to the through hole 3 of the beam 2 using the bolt 9 and the nut 10 is set to 1.0 to 3.0 times the volume V1 of the space portion 16, The length C from the minimum outer diameter portion 21a of the ring main body 21 to the outer periphery of the flange portion 23 is set to be equal to or less than half (more preferably 1/4 or less) of the minimum outer diameter d3 of the ring main body 21, and the shaft of the flange portion 23 The length F in the direction is set to be equal to or less than half of the length A in the axial direction of the ring body 21. Further, the inner diameter d2 of the beam reinforcing bracket 20 is set to be 0.8 times or less the beam formation H of the beam 2. With such a configuration, the strength of the beam 2 in which the through hole 3 is formed can be made substantially equal to the strength of the non-hole beam.
[0039]
Here, with reference to FIG. 10, the beam through-hole reinforcement structure constructed | assembled using the beam reinforcement metal fitting 20 shown in FIGS. 6-9 mentioned above is demonstrated. As shown in FIG. 10, in a beam-to-column connection structure formed by joining four horizontal beams 2 to four vertical columns 24 at intervals of 90 degrees from four directions, straight lines are formed. A beam reinforcing metal fitting 20 is fixed to the through hole 3 formed in the two beams 2 arranged in the state shown in FIGS.
[0040]
In the beam through-hole reinforcing structure shown in FIG. 10, the distance 22 from the joint portion 25 between the column 24 and each beam 2 to the axis 20 c of the beam reinforcing bracket 20 is set to be not more than twice the beam formation H of the beam 2. . In this way, by reinforcing the through hole 3 using the beam reinforcing bracket 20, the through hole 3 can be disposed at a position close to the column 24. For this reason, it is possible to consolidate the piping and wiring, which is advantageous in designing the building, and the workability of various piping and wiring when constructing the building structure is greatly improved.
[0041]
In general, a region from the joint 25 between the beam 3 and the column 24 to a position separated by a distance twice as long as the beam formation H is referred to as a plasticized region 26, and this region 26 normally avoids the formation of the through hole 3. However, by using the bolt 9 and the nut 10 to fix the beam reinforcing bracket 20 to the through hole 3, the strength of the beam 2 can be prevented from lowering, and the strength equivalent to that of a non-hole beam can be obtained. The through hole 3 can be formed also in the plasticized region 26.
[0042]
The reason why the beam reinforcing bracket 20 having the above-described configuration exhibits an excellent beam reinforcing action is partially unknown, but the shape of the beam reinforcing bracket 20, the dimensional ratio of each part, the volume ratio, etc. are described above. By setting as described above, by fixing the beam reinforcing bracket 20 to the through-hole 3 of the beam 2, the out-of-plane rigidity of the web portion 2 w of the beam 2 is increased, and the web portion 2 w when the external force is applied to the beam 2 is increased. It is presumed that out-of-plane deformation is prevented.
[0043]
10 shows the beam through-hole reinforcing structure constructed using the beam reinforcing bracket 20, but a similar beam through-hole reinforcing structure can be constructed using the other beam reinforcing brackets 1 and 12 described above. It is possible to obtain the same effect as when the beam reinforcing metal fitting 20 is used.
[0044]
【The invention's effect】
The present invention has the following effects.
[0045]
(1) A ring body that can be fitted into a through-hole formed in a beam, and a flange portion formed on the outer periphery of one side of the ring body in the axial direction, and a plurality of portions provided at the periphery of the through-hole Fastening means mounting holes arranged to correspond to the fastening means insertion holes are provided in the flange portion, and the axial length of the ring body is 0.5 to 10.0 times the radial thickness (more preferably 0.5 times). By doubling up to 5.0 times), it is possible to reinforce to the required strength while eliminating waste of material even for through holes of different sizes, and the piping is inserted diagonally into the through hole Even if it does not contact | abut to a beam reinforcement metal fitting, the freedom degree of attachment of piping etc. can be raised.
[0046]
(2) By setting the volume of the beam reinforcing bracket to 1.0 to 3.0 times the volume of the space formed inside the through hole formed in the beam, On the other hand, reinforcement is performed with a predetermined strength, and it is possible to prevent the weight from becoming too large.
[0047]
(3) By gradually reducing the diameter of the outer peripheral portion of the ring main body toward the surface without the flange portion, it is possible to facilitate the fitting operation into the through-hole of the beam and shorten the working time. .
[0048]
(4) The length from the minimum outer diameter portion of the outer peripheral portion to the outer periphery of the flange portion is less than half of the minimum outer diameter of the outer peripheral portion, and the axial length of the flange portion is half of the axial length of the ring body By making it as follows, it will exhibit excellent reinforcing action when fixed in the through hole of the beam, and the same strength as a non-hole beam can be obtained, so the through hole installation in the plasticized area close to the column beam joint Is possible.
[0049]
(5) By reducing the inner diameter of the ring body to 0.8 times or less than that of the beam, the size of the hole for piping and wiring is increased to 0.8 times that of the beam without reducing the strength of the beam. Therefore, it is not necessary to provide a plurality of through holes, and man-hours can be reduced.
[0050]
(6) By providing three or more positioning projections that are in direct contact with the inner edge of the through hole on the outer periphery, the center position can be adjusted by absorbing the shape error between the through hole and the beam reinforcing bracket. As a result, the mounting accuracy is improved, the quality is improved, and the working time can be shortened.
[0051]
(7) By providing a dowel holding surface for holding the dowel on the surface of the flange portion facing the beam, it is possible to hold the dowel between them, thereby increasing the resistance to shearing force. Fixing work can be shortened by reducing the number of fastening means.
[0052]
(8) In a beam through-hole reinforcing structure formed by fixing the beam reinforcing metal fitting according to any one of (1) to (7) to a through-hole of a beam constituting the column-beam joint structure with a fastening means, By making the distance from the joint position with the beam to the axis of the beam reinforcement bracket less than twice the beam formation, it is possible to place the beam through hole at a position close to the column, thus consolidating piping and wiring This is convenient for building design, and the workability of piping and wiring is greatly improved.
[Brief description of the drawings]
FIG. 1 (a) is a side sectional view showing a use state of a beam reinforcing bracket according to a first embodiment of the present invention, and FIG. 1 (b) shows a through hole of a beam to which the reinforcing bracket shown in FIG. It is a sectional side view shown.
FIG. 2 is a front view showing a usage state of the beam reinforcing metal fitting shown in FIG.
FIG. 3 is a perspective view showing a usage state of the beam reinforcing bracket shown in FIG.
FIG. 4 is a side sectional view showing a usage state of a beam reinforcing bracket according to a second embodiment of the present invention.
FIG. 5 is a partial front view showing a usage state of the beam reinforcing bracket shown in FIG. 4;
FIG. 6 is a front view showing a beam reinforcing bracket according to a third embodiment of the present invention.
7 is a cross-sectional view taken along line XX in FIG.
FIG. 8 is a front view showing a usage state of the beam reinforcing bracket shown in FIG. 6;
FIG. 9 is a side sectional view showing a usage state of the beam reinforcing bracket shown in FIG. 6;
10 is a perspective view showing a beam through-hole reinforcing structure constructed using the beam reinforcing bracket shown in FIG. 6;
FIG. 11 is a side sectional view showing a conventional beam through-hole sleeve.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 12, 20 Beam reinforcement metal fitting 2 Beam 2w Web part 3 Through-hole 3a Inner edge part 4,13,21 Ring main body 4a, 13a, 21a Outer peripheral part 5,23 Flange part 5a Givel clamping surface 6 Fastening means insertion hole 7 Fastening means Mounting hole 8 Positioning protrusion 9 Bolt 10 Nut 11 Washer 13 Outer peripheral part 14 Givel 15 Pipe 16 Space part 20c Axis center 22 Distance 24 Column 25 Joint part 26 Plasticization region H Beam forming

Claims (8)

梁に形成された貫通孔の周縁部に締結手段を用いて固定される略リング状の梁補強金具であって、前記貫通孔に嵌入可能なリング本体と、前記リング本体の軸方向の片面側の外周に形成されたフランジ部とを有し、前記貫通孔の周縁部に設けられた複数の締結手段挿通孔と対応する配置の締結手段取付孔を前記フランジ部に設け、前記リング本体の軸方向の長さを半径方向の肉厚の0.5倍〜10.0倍としたことを特徴とする梁補強金具。A ring-shaped beam reinforcing bracket fixed to a peripheral portion of a through-hole formed in a beam by using a fastening means, a ring main body that can be fitted into the through-hole, and one axial side of the ring main body A plurality of fastening means insertion holes provided in a peripheral portion of the through hole, the fastening means mounting holes arranged corresponding to the plurality of fastening means insertion holes provided in the periphery of the through hole, and the shaft of the ring body A beam reinforcing bracket characterized in that the length in the direction is 0.5 to 10.0 times the thickness in the radial direction. 前記梁補強金具の体積を、前記梁に形成された貫通孔の内部に形成された空間部の体積の1.0倍〜3.0倍としたことを特徴とする請求項1に記載の梁補強金具。2. The beam according to claim 1, wherein a volume of the beam reinforcing metal fitting is 1.0 to 3.0 times a volume of a space portion formed in a through hole formed in the beam. Reinforcing metal fittings. 前記リング本体の外周部を前記フランジ部の無い面側に向かって徐々に縮径させたことを特徴とする請求項1または2に記載の梁補強金具。The beam reinforcing bracket according to claim 1 or 2, wherein a diameter of the outer peripheral portion of the ring main body is gradually reduced toward a surface side without the flange portion. 前記外周部の最小外径部から前記フランジ部外周までの長さを前記外周部の最小外径の半分以下とし、前記フランジ部の軸方向の長さを前記リング本体の軸方向の長さの半分以下としたことを特徴とする請求項1〜3のいずれかに記載の梁補強金具。The length from the minimum outer diameter part of the outer peripheral part to the outer periphery of the flange part is less than or equal to half of the minimum outer diameter of the outer peripheral part, and the axial length of the flange part is equal to the axial length of the ring body The beam reinforcing bracket according to any one of claims 1 to 3, wherein the beam reinforcing bracket is half or less. 前記リング本体の内径を前記梁の梁成の0.8倍以下としたことを特徴とする請求項1〜4のいずれかに記載の梁補強金具。The beam reinforcing bracket according to any one of claims 1 to 4, wherein an inner diameter of the ring main body is 0.8 times or less of a beam formation of the beam. 前記貫通孔の内縁部に直接当接する3以上の位置決め突起部を前記外周部に設けたことを特徴とする請求項1〜5のいずれかに記載の梁補強金具。The beam reinforcing bracket according to any one of claims 1 to 5, wherein three or more positioning protrusions that directly contact an inner edge portion of the through hole are provided on the outer peripheral portion. 前記フランジ部の前記梁との対向面に、前記梁との間にジベルを挟持するためのジベル挟持面を設けたことを特徴とする請求項1〜6のいずれかに記載の梁補強金具。The beam reinforcing bracket according to any one of claims 1 to 6, wherein a diveling surface for holding a divel is provided between the flange part and the beam. 柱梁接合構造を構成する梁に形成された貫通孔の周縁部に請求項1〜7のいずれかに記載の梁補強金具を締結手段を用いて固定して形成した梁貫通孔補強構造であって、前記柱と前記梁との接合位置から前記梁補強金具の軸心までの距離を前記梁の梁成の2倍以下としたことを特徴とする梁貫通孔補強構造。A beam through-hole reinforcing structure formed by fixing the beam reinforcing metal fitting according to any one of claims 1 to 7 to a peripheral portion of a through-hole formed in a beam constituting a beam-to-column connection structure by using a fastening means. The beam through-hole reinforcing structure is characterized in that the distance from the joint position between the column and the beam to the axis of the beam reinforcing bracket is set to be twice or less the beam formation of the beam.
JP2002351707A 2001-12-04 2002-12-03 Beam reinforcing bracket and beam through-hole reinforcement structure using the same Expired - Fee Related JP3837450B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018031158A (en) * 2016-08-24 2018-03-01 積水ハウス株式会社 Damping stud

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* Cited by examiner, † Cited by third party
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JP4688628B2 (en) * 2005-10-25 2011-05-25 日立機材株式会社 Steel beam reinforcement hardware and its construction method
JP4800011B2 (en) * 2005-11-15 2011-10-26 日立機材株式会社 Steel beam reinforcement hardware and its construction method
JP4781088B2 (en) * 2005-11-15 2011-09-28 日立機材株式会社 Beam through hole reinforcement bracket, beam through hole reinforcement structure
JP4804117B2 (en) * 2005-11-15 2011-11-02 日立機材株式会社 Steel beam reinforcement hardware and its construction method
JP2007138451A (en) * 2005-11-15 2007-06-07 Hitachi Metals Techno Ltd Beam through hole reinforcing fitting
CN106677426A (en) * 2016-12-22 2017-05-17 安徽伟宏钢结构集团股份有限公司 Steel member for workshop equipment assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018031158A (en) * 2016-08-24 2018-03-01 積水ハウス株式会社 Damping stud

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